Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VIA4041 found under Thumbscrew by Allmetal Screw Products Corp. The National Stock Number assigned to this part is 5305011763931, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like VIA4041.